diff options
Diffstat (limited to 'jsf/plugins/org.eclipse.jst.jsf.core/src/org/eclipse/jst/jsf/validation/internal/el/operators/MemberAccessorOperator.java')
| -rw-r--r-- | jsf/plugins/org.eclipse.jst.jsf.core/src/org/eclipse/jst/jsf/validation/internal/el/operators/MemberAccessorOperator.java | 280 |
1 files changed, 0 insertions, 280 deletions
diff --git a/jsf/plugins/org.eclipse.jst.jsf.core/src/org/eclipse/jst/jsf/validation/internal/el/operators/MemberAccessorOperator.java b/jsf/plugins/org.eclipse.jst.jsf.core/src/org/eclipse/jst/jsf/validation/internal/el/operators/MemberAccessorOperator.java deleted file mode 100644 index 37390d96f..000000000 --- a/jsf/plugins/org.eclipse.jst.jsf.core/src/org/eclipse/jst/jsf/validation/internal/el/operators/MemberAccessorOperator.java +++ /dev/null @@ -1,280 +0,0 @@ -/******************************************************************************* - * Copyright (c) 2001, 2007 Oracle Corporation and others. - * All rights reserved. This program and the accompanying materials - * are made available under the terms of the Eclipse Public License v1.0 - * which accompanies this distribution, and is available at - * http://www.eclipse.org/legal/epl-v10.html - * - * Contributors: - * Oracle Corporation - initial API and implementation - *******************************************************************************/ -package org.eclipse.jst.jsf.validation.internal.el.operators; - -import org.eclipse.core.resources.IFile; -import org.eclipse.emf.common.util.Diagnostic; -import org.eclipse.jst.jsf.common.internal.types.LiteralType; -import org.eclipse.jst.jsf.common.internal.types.NullLiteralType; -import org.eclipse.jst.jsf.common.internal.types.SignatureBasedType; -import org.eclipse.jst.jsf.common.internal.types.TypeCoercer; -import org.eclipse.jst.jsf.common.internal.types.TypeConstants; -import org.eclipse.jst.jsf.common.internal.types.ValueType; -import org.eclipse.jst.jsf.context.symbol.IMethodSymbol; -import org.eclipse.jst.jsf.context.symbol.IObjectSymbol; -import org.eclipse.jst.jsf.context.symbol.IPropertySymbol; -import org.eclipse.jst.jsf.context.symbol.ISymbol; -import org.eclipse.jst.jsf.context.symbol.internal.util.IMethodSymbolBasedType; -import org.eclipse.jst.jsf.context.symbol.internal.util.IObjectSymbolBasedValueType; -import org.eclipse.jst.jsf.core.internal.JSFCorePlugin; -import org.eclipse.jst.jsf.designtime.DesignTimeApplicationManager; -import org.eclipse.jst.jsf.designtime.el.AbstractDTMethodResolver; -import org.eclipse.jst.jsf.designtime.el.AbstractDTPropertyResolver; -import org.eclipse.jst.jsf.validation.internal.el.diagnostics.DiagnosticFactory; - -/** - * Super-class for all operators whose function is to access members of an - * EL object. i.e. the "." and "[]" operators - * - * @author cbateman - * - */ -public abstract class MemberAccessorOperator -{ - /** - * The source file for the EL expression in which this operator - * is being evaluated. - */ - protected final IFile _file; - - /** - * the common factory used to create diagnostics - */ - protected final DiagnosticFactory _diagnosticFactory; - - // TODO: need to reconcile with BinaryOperator? performOperation must return - // SignatureBasedType since it may return a method. This can't happen - // with other operators (besides eqiv []) - /** - * @param file - * @param diagnosticFactory - */ - protected MemberAccessorOperator(final IFile file, final DiagnosticFactory diagnosticFactory) - { - _file = file; - _diagnosticFactory = diagnosticFactory; - } - - /** - * @param firstArg - * @param secondArg - * @return the result of validating the dot operation with these arguments. - */ - public Diagnostic validate(ValueType firstArg, ValueType secondArg) - { - if (!(firstArg instanceof IObjectSymbolBasedValueType)) - { - throw new AssertionError("The first argument of the member operator must always be a symbol resolvable value type"); - } - - if (TypeCoercer.typeIsNull(secondArg.getSignature())) - { - return _diagnosticFactory.create_BINARY_OP_DOT_WITH_VALUEB_NULL(getOperatorName()); - } - - return validateObjectSymbolValue((IObjectSymbolBasedValueType) firstArg, secondArg); - } - - /** - * @param firstArg - * @param secondArg - * @return the diagnostic for member(firstArg, secondArg) - */ - protected abstract Diagnostic validateObjectSymbolValue(IObjectSymbolBasedValueType firstArg, ValueType secondArg); - - /** - * @param firstArg - * @param secondArg - * @return a validation of a named property accessible base (map or bean) given - * an a literal key argument - */ - protected Diagnostic validateNamedPropertyAccessorBase(IObjectSymbolBasedValueType firstArg - , LiteralType secondArg) - { - final IObjectSymbol curBaseSymbol = firstArg.getSymbol(); - - final ISymbol nextSymbol = getMemberSymbol(firstArg.getSymbol(), - secondArg.getLiteralValueRaw()); - - // if the x in x.y is an unconstrained map an it returns - // a java.lang.Object, then return null. We can't really say - // anything meaningful about such a property anyway. - // TODO: do we need to refine the type descriptor on such - // a property object to make this more precise? - if (curBaseSymbol.supportsCoercion(TypeConstants.TYPE_MAP) - && nextSymbol instanceof IPropertySymbol - && TypeConstants.TYPE_JAVAOBJECT.equals(((IPropertySymbol)nextSymbol).getTypeDescriptor().getTypeSignature())) - { - // if we get a symbol back that's a generic object coming from a map - // then stop validating; we can't tell anything for sure - return Diagnostic.OK_INSTANCE; - } - - if (nextSymbol == null) - { - return _diagnosticFactory.create_MEMBER_NOT_FOUND(secondArg.getLiteralValue() - ,firstArg.getSymbol().getName()); - } - - return Diagnostic.OK_INSTANCE; - } - - /** - * @param firstArg - * @param secondArg - * @return the resolved type for the operation or null if not computable - */ - public SignatureBasedType performOperation(ValueType firstArg, ValueType secondArg) - { - if (!(firstArg instanceof IObjectSymbolBasedValueType)) - { - return null; - } - - // per JSP.2.3.4, if value-b is null, then return null (not literal null) - if (TypeCoercer.typeIsNull(secondArg.getSignature())) - { - return null; - } - - return handlePerformObjectSymbolValue((IObjectSymbolBasedValueType)firstArg, secondArg); - } - - /** - * @param firstArg -- represents value-a (expr-a after step 1) in JSP.2.3.4 - * @param secondArg -- represents value-b (expr-b after step 3) in JSP.2.3.4 - * @return the new ValueType for this operation or null - */ - protected abstract SignatureBasedType handlePerformObjectSymbolValue(IObjectSymbolBasedValueType firstArg - , ValueType secondArg); - - /** - * @param firstArg - * @param secondArg - * @return the resolved type for firstArg[secondArg] treating firstArg as a type - * that uses a named property accessor (i.e. a map or bean but not a list or array) - * or null if unresolved - */ - protected SignatureBasedType handlePerformNamedPropertyAccessorBase(IObjectSymbolBasedValueType firstArg - , LiteralType secondArg) - { - final ISymbol symbol = - getMemberSymbol(firstArg.getSymbol(), secondArg.getLiteralValueRaw()); - - if (symbol instanceof IPropertySymbol) - { - return new IObjectSymbolBasedValueType((IPropertySymbol)symbol); - } - else if (symbol instanceof IMethodSymbol) - { - return new IMethodSymbolBasedType((IMethodSymbol) symbol); - } - - // fall-through and return null - // per JSP2.3.4 steps 5 and 6, return null literal if map, null (error) otherwise - if (firstArg.isInstanceOf(TypeConstants.TYPE_MAP)) - { - return NullLiteralType.SINGLETON; - } - return null; - } - - /** - * @param symbol - * @param name - * @return the member symbol of 'symbol' corresponding to 'name' or - * null if there is no such member - */ - protected final ISymbol getMemberSymbol(final IObjectSymbol symbol, final Object name) - { - ISymbol memberSymbol = getPropertySymbol(symbol, name); - - if (memberSymbol != null) - { - return memberSymbol; - } - - memberSymbol = getMethodSymbol(symbol, name); - - // otherwise, see if it's a valid method - if (memberSymbol != null) - { - return memberSymbol; - } - - // if not a property or method, then not a valid member - return null; - } - - /** - * @param symbol - * @param name - * @return the property symbol called name relative to 'symbol' or null - * if one doesn't exist - */ - protected final ISymbol getPropertySymbol(final ISymbol symbol, final Object name) - { - AbstractDTPropertyResolver resolver = getPropertyResolver(); - - if (resolver != null) - { - return resolver.getProperty(symbol,name); - } - - JSFCorePlugin.log("Error acquiring property resolver", new Throwable()); - return null; - } - - /** - * @param symbol - * @param name - * @return the method symbol on 'symbol' corresponding to - * 'name' or null if no such member - */ - protected final IMethodSymbol getMethodSymbol(final IObjectSymbol symbol, final Object name) - { - AbstractDTMethodResolver resolver = getMethodResolver(); - - if (resolver != null) - { - return resolver.getMethod(symbol, name); - } - - JSFCorePlugin.log("Error acquiring property resolver", new Throwable()); - return null; - - } - - /** - * @return the property resolver for the current source file - */ - protected final AbstractDTPropertyResolver getPropertyResolver() - { - return - DesignTimeApplicationManager.getInstance(_file.getProject()) - .getPropertyResolver(); - } - - /** - * @return the method resolver for the current source file - */ - protected final AbstractDTMethodResolver getMethodResolver() - { - return - DesignTimeApplicationManager.getInstance(_file.getProject()) - .getMethodResolver(); - } - - /** - * @return a user-readable name of the operator (i.e. dot or bracket) - */ - protected abstract String getOperatorName(); -} |